Problem Sets (Variables)Read and answer the following. Choose the letter of the correct answer.20 ml cold water5g sugar20 times sing20 ml cold water5g sug10 times stirring1. Which is the independent variable?A. the amount of waterB. the amount of sugar2. Which is the dependent variable?A. the dissolving time of sugarB. the heating time of water3. Which are the controlled variables?I. water temperatureII. amount of waterC. the times of stirringD. the temperature of waterC. the number of granules leftD. the temperature of waterIII. amount of sugar V. stirring timeIV. dissolving time of sugarA. I, II, III, IVC. II, III, VB. II, II, IVD. I, III, IV4. Mary wants to know at which temperature the salt dissolve faster in water. What is the dependent variable inthe situation?A. the level of waterB. the type of waterC. the source of waterD. the temperature of water5. How can a scientist know if his/her hypothesis is effective or not?A. rely on wild guessB. observe from othersC. test hypothesis thru testingD. conclude based on gathered info from others
Answer (1)
A scientist tests their hypothesis by conducting an experiment and observing the results. If the results support the hypothesis, it is considered effective. If not, the hypothesis needs to be revised or rejected.Let me know if you have any other question!Hope it helps po.
